/Engine/Plugins/Experimental/PCG/Source/PCG/Public/PCGSubsystem.h
Immediately dirties the partition actors in the given bounds
void DirtyGraph ( [UPCGComponent](API\Plugins\PCG\UPCGComponent) * Component, const FBox & InBounds, [EPCGComponentDirtyFlag](API\Plugins\PCG\EPCGComponentDirtyFlag) DirtyFlag )